Today you can get seconds of earlier buffet items….
Your Blog: Post videos, images, change the template, add gadgets, user Reader to view and comment on other blogs (blogger guide, reader guide)
Bookmarking: Browse the Website Buffet, use Diigo (Diigo guide) to bookmark sites you like
Presentations: Post a Google Presentation or Prezi on your blog. Browse Slideshare for useful presentations (presentation guide)
Activities: Sample from the huge Activities buffet, bookmark sites you like wit Diigo. Create your own Hot Potatoes or Proprofs activity.
Assorted: Experiment with mapping, chat tools, and/or audio.
….or sample a couple other items on the buffet…
Check out the Social Networking Guide